EP 4142108 A4 20231227 - TERMINAL DEVICE AND CONTROL METHOD THEREFOR
Title (en)
TERMINAL DEVICE AND CONTROL METHOD THEREFOR
Title (de)
ENDGERÄTEVORRICHTUNG UND STEUERUNGSVERFAHREN DAFÜR
Title (fr)
DISPOSITIF TERMINAL ET SON PROCÉDÉ DE COMMANDE
Publication
Application
Priority
- CN 202010425200 A 20200519
- CN 2021073369 W 20210122
Abstract (en)
[origin: EP4142108A1] A terminal device (01) and a method for controlling the terminal device are provided, and relate to the field of electronic technologies. A new solution for adjusting a value Q of a transmitting apparatus (10) is provided. A terminal device (01) is provided, including a display screen (11), a housing (12), and a middle frame (13). A transmitting circuit (42) is disposed on a side that is of the middle frame (13) and that faces the housing (12). The transmitting circuit (42) includes a matching network (421) and a transmitting coil (422) connected to the matching network (421). The matching network (421) is configured to perform impedance matching on a received alternating current power signal and send the received alternating current power signal to the transmitting coil (422). The matching network (421) includes a parallel resonant capacitor C21 connected in parallel to the transmitting coil (422). The transmitting circuit (42) further includes a resistance switching circuit (423) connected in series to the parallel resonant capacitor C21. The resistance switching circuit (423) is configured to adjust a quality factor value Q of the transmitting circuit (42) by changing a resistance value of the resistance switching circuit (423).
IPC 8 full level
H02J 50/23 (2016.01); H04B 1/02 (2006.01); H04W 88/02 (2009.01)
CPC (source: CN EP US)
H02J 7/00034 (2020.01 - EP); H02J 7/02 (2013.01 - CN); H02J 50/05 (2016.02 - US); H02J 50/12 (2016.02 - CN EP); H02J 50/20 (2016.02 - CN); H02J 50/80 (2016.02 - EP US); H04B 5/22 (2024.01 - US); H04B 5/24 (2024.01 - CN); H04B 5/70 (2024.01 - CN); H04B 5/79 (2024.01 - EP US); G06F 1/1637 (2013.01 - US)
Citation (search report)
- [A] CN 204011680 U 20141210 - HONGHE TECHNOLOGY CO LTD
- [A] EP 2287997 A2 20110223 - FELICA NETWORKS INC [JP]
- [A] KR 20150066070 A 20150616 - KOREA ELECTRONICS TELECOMM [KR]
- [A] CAIRO JOSEP IGNASI ET AL: "Reconfigurable System for Wireless Power Transfer (WPT) and Near Field Communications (NFC)", IEEE JOURNAL OF RADIO FREQUENCY IDENTIFICATION, IEEE, vol. 1, no. 4, 1 December 2017 (2017-12-01), pages 253 - 259, XP011677929, DOI: 10.1109/JRFID.2018.2801120
- See also references of WO 2021232838A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4142108 A1 20230301; EP 4142108 A4 20231227; CN 111769655 A 20201013; CN 111769655 B 20220923; JP 2023526643 A 20230622; JP 7432012 B2 20240215; US 2023084747 A1 20230316; WO 2021232838 A1 20211125
DOCDB simple family (application)
EP 21809519 A 20210122; CN 202010425200 A 20200519; CN 2021073369 W 20210122; JP 2022570722 A 20210122; US 202217989517 A 20221117